Patent SG-11201905068V-A (SG)
Title: Periodic non-intrusive diagnosis of lockstep systems
Inventor: BANSAL KAPIL
IPC: G06F11/22
Filed: 2017-12-12
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 26 July 2018 (26.07.2018) WIPO I PCT omit IIl °nolo Oil ono iflo oimIE (10) International Publication Number WO 2018/136169 Al DISABLE 1\" . COMPARATOR, CORES REMAIN OPERATIONAL, RUN A DIAGNOSIS OF COMPARATOR, ENABLE I' COMPARATOR CORES OPERATIONAL, 1 COMPARATOR ACTIVE (51) International Patent Classification: GOOF 11/16 (2006.01) GOOF 11/22 (2006.01) (21) International Application Number: PCT/US2017/065685 (22) International Filing Date: 12 December 2017 (12.12.2017) (25) Filing Language: English (72) Inventors: BANSAL, Kapil; Purva Riviera Marathahal- li, Bangalore RGA006 (IN). DIGARI, Kailash; 9155 Prestige, Shantiniketan, Whitefield, Near ITPL, Bangalore 560048 (IN). GULATI, Rahul; 5775 Morehouse Drive, San Diego, California 92121-1714 (US). (74) Agent: READ, Randol W. et al.; Patterson & Sheridan, L.L.P., 24 Greenway Plaza, Suite 1600, Houston, Texas 77046-2472 (US). (81) Designated States (unless otherwise indicated, for every kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). Declarations under Rule 4.17: as to applicant's entitlement to apply for and be granted a patent (Rule 4.17(ii)) as to the applicant's entitlement to claim the priority of the earlier application (Rule 4.17(iii)) (26) Publication Language: English (30) Priority Data: 15/410,271 19 January 2017 (19.01.2017) US (84) (71) Applicant: QUALCOMM INCORPORATED [US/US]; Attn: International IP Administration, 5775 Morehouse Dri- ve, San Diego, California 92121-1714 (US). = (54) Title: PERIODIC NON-INTRUSIVE DIAGNOSIS OF LOCKSTEP SYSTEMS (57) : Aspects disclosed herein relate to periodic non-intrusive diagnosis of lockstep systems. An exemplary method includes comparing execution of a program on a first processing system of the plurality of pro- cessing systems and execution of the program on a second processing sys- i i i tem of the plurality of processing systems using a first comparator circuit, comparing the execution of the program on the first processing system and CORES REMAIN COMPARATOR, DISA 131.E I TT the execution of the program on the second processing system using a sec- ond comparator circuit, and miming a diagnosis program on the second OPERATIONAL. comparator circuit while the comparing using the first comparator circuit RUN A DIAGNOSIS OH 1 s ' is ongoing. COMPARATOR, ENABLE COMPARATOR 1 1 W O 20 18/ 136 169 Al CORES OPERATIONAL, 2 COMPARATOR ACTIVE DISABLE 2 . COMPARATOR. CORES REMAIN OPERATIONAL, RUN A DIAGNOSIS OF 2 . COMPARATOR, ENABLE 2 . COMPARATOR FIGURE 5 CORES OPERATFONAI„ 2 . COMPARATOR ACTIVE [Continued on next page] WO 2018/136169 Al MIDEDIMOHNOBEIEDEMIIMH111111111111011111111111111111 Published: — with international search report (Art. 21(3))